// Pairs of mirrored characters from
// http://www.unicode.org/Public/6.1.0/ucd/BidiMirroring.txt
var mirrors = [
  [0x0028, 0x0029],
  [0x0029, 0x0028],
  [0x003C, 0x003E],
  [0x003E, 0x003C],
  [0x005B, 0x005D],
  [0x005D, 0x005B],
  [0x007B, 0x007D],
  [0x007D, 0x007B],
  [0x00AB, 0x00BB],
  [0x00BB, 0x00AB],
// These four are disabled as on Mac earlier than 10.7, Tibetan characters will
// not be used from the BitPattern.woff font due to lack of platform support.
//
//   [0x0F3A, 0x0F3B],
//   [0x0F3B, 0x0F3A],
//   [0x0F3C, 0x0F3D],
//   [0x0F3D, 0x0F3C],
  [0x169B, 0x169C],
  [0x169C, 0x169B],
  [0x2039, 0x203A],
  [0x203A, 0x2039],
  [0x2045, 0x2046],
  [0x2046, 0x2045],
  [0x207D, 0x207E],
  [0x207E, 0x207D],
  [0x208D, 0x208E],
  [0x208E, 0x208D],
  [0x2208, 0x220B],
  [0x2209, 0x220C],
  [0x220A, 0x220D],
  [0x220B, 0x2208],
  [0x220C, 0x2209],
  [0x220D, 0x220A],
  [0x2215, 0x29F5],
  [0x223C, 0x223D],
  [0x223D, 0x223C],
  [0x2243, 0x22CD],
  [0x2252, 0x2253],
  [0x2253, 0x2252],
  [0x2254, 0x2255],
  [0x2255, 0x2254],
  [0x2264, 0x2265],
  [0x2265, 0x2264],
  [0x2266, 0x2267],
  [0x2267, 0x2266],
  [0x2268, 0x2269],
  [0x2269, 0x2268],
  [0x226A, 0x226B],
  [0x226B, 0x226A],
  [0x226E, 0x226F],
  [0x226F, 0x226E],
  [0x2270, 0x2271],
  [0x2271, 0x2270],
  [0x2272, 0x2273],
  [0x2273, 0x2272],
  [0x2274, 0x2275],
  [0x2275, 0x2274],
  [0x2276, 0x2277],
  [0x2277, 0x2276],
  [0x2278, 0x2279],
  [0x2279, 0x2278],
  [0x227A, 0x227B],
  [0x227B, 0x227A],
  [0x227C, 0x227D],
  [0x227D, 0x227C],
  [0x227E, 0x227F],
  [0x227F, 0x227E],
  [0x2280, 0x2281],
  [0x2281, 0x2280],
  [0x2282, 0x2283],
  [0x2283, 0x2282],
  [0x2284, 0x2285],
  [0x2285, 0x2284],
  [0x2286, 0x2287],
  [0x2287, 0x2286],
  [0x2288, 0x2289],
  [0x2289, 0x2288],
  [0x228A, 0x228B],
  [0x228B, 0x228A],
  [0x228F, 0x2290],
  [0x2290, 0x228F],
  [0x2291, 0x2292],
  [0x2292, 0x2291],
  [0x2298, 0x29B8],
  [0x22A2, 0x22A3],
  [0x22A3, 0x22A2],
  [0x22A6, 0x2ADE],
  [0x22A8, 0x2AE4],
  [0x22A9, 0x2AE3],
  [0x22AB, 0x2AE5],
  [0x22B0, 0x22B1],
  [0x22B1, 0x22B0],
  [0x22B2, 0x22B3],
  [0x22B3, 0x22B2],
  [0x22B4, 0x22B5],
  [0x22B5, 0x22B4],
  [0x22B6, 0x22B7],
  [0x22B7, 0x22B6],
  [0x22C9, 0x22CA],
  [0x22CA, 0x22C9],
  [0x22CB, 0x22CC],
  [0x22CC, 0x22CB],
  [0x22CD, 0x2243],
  [0x22D0, 0x22D1],
  [0x22D1, 0x22D0],
  [0x22D6, 0x22D7],
  [0x22D7, 0x22D6],
  [0x22D8, 0x22D9],
  [0x22D9, 0x22D8],
  [0x22DA, 0x22DB],
  [0x22DB, 0x22DA],
  [0x22DC, 0x22DD],
  [0x22DD, 0x22DC],
  [0x22DE, 0x22DF],
  [0x22DF, 0x22DE],
  [0x22E0, 0x22E1],
  [0x22E1, 0x22E0],
  [0x22E2, 0x22E3],
  [0x22E3, 0x22E2],
  [0x22E4, 0x22E5],
  [0x22E5, 0x22E4],
  [0x22E6, 0x22E7],
  [0x22E7, 0x22E6],
  [0x22E8, 0x22E9],
  [0x22E9, 0x22E8],
  [0x22EA, 0x22EB],
  [0x22EB, 0x22EA],
  [0x22EC, 0x22ED],
  [0x22ED, 0x22EC],
  [0x22F0, 0x22F1],
  [0x22F1, 0x22F0],
  [0x22F2, 0x22FA],
  [0x22F3, 0x22FB],
  [0x22F4, 0x22FC],
  [0x22F6, 0x22FD],
  [0x22F7, 0x22FE],
  [0x22FA, 0x22F2],
  [0x22FB, 0x22F3],
  [0x22FC, 0x22F4],
  [0x22FD, 0x22F6],
  [0x22FE, 0x22F7],
  [0x2308, 0x2309],
  [0x2309, 0x2308],
  [0x230A, 0x230B],
  [0x230B, 0x230A],
  [0x2329, 0x232A],
  [0x232A, 0x2329],
  [0x2768, 0x2769],
  [0x2769, 0x2768],
  [0x276A, 0x276B],
  [0x276B, 0x276A],
  [0x276C, 0x276D],
  [0x276D, 0x276C],
  [0x276E, 0x276F],
  [0x276F, 0x276E],
  [0x2770, 0x2771],
  [0x2771, 0x2770],
  [0x2772, 0x2773],
  [0x2773, 0x2772],
  [0x2774, 0x2775],
  [0x2775, 0x2774],
  [0x27C3, 0x27C4],
  [0x27C4, 0x27C3],
  [0x27C5, 0x27C6],
  [0x27C6, 0x27C5],
  [0x27C8, 0x27C9],
  [0x27C9, 0x27C8],
  [0x27CB, 0x27CD],
  [0x27CD, 0x27CB],
  [0x27D5, 0x27D6],
  [0x27D6, 0x27D5],
  [0x27DD, 0x27DE],
  [0x27DE, 0x27DD],
  [0x27E2, 0x27E3],
  [0x27E3, 0x27E2],
  [0x27E4, 0x27E5],
  [0x27E5, 0x27E4],
  [0x27E6, 0x27E7],
  [0x27E7, 0x27E6],
  [0x27E8, 0x27E9],
  [0x27E9, 0x27E8],
  [0x27EA, 0x27EB],
  [0x27EB, 0x27EA],
  [0x27EC, 0x27ED],
  [0x27ED, 0x27EC],
  [0x27EE, 0x27EF],
  [0x27EF, 0x27EE],
  [0x2983, 0x2984],
  [0x2984, 0x2983],
  [0x2985, 0x2986],
  [0x2986, 0x2985],
  [0x2987, 0x2988],
  [0x2988, 0x2987],
  [0x2989, 0x298A],
  [0x298A, 0x2989],
  [0x298B, 0x298C],
  [0x298C, 0x298B],
  [0x298D, 0x2990],
  [0x298E, 0x298F],
  [0x298F, 0x298E],
  [0x2990, 0x298D],
  [0x2991, 0x2992],
  [0x2992, 0x2991],
  [0x2993, 0x2994],
  [0x2994, 0x2993],
  [0x2995, 0x2996],
  [0x2996, 0x2995],
  [0x2997, 0x2998],
  [0x2998, 0x2997],
  [0x29B8, 0x2298],
  [0x29C0, 0x29C1],
  [0x29C1, 0x29C0],
  [0x29C4, 0x29C5],
  [0x29C5, 0x29C4],
  [0x29CF, 0x29D0],
  [0x29D0, 0x29CF],
  [0x29D1, 0x29D2],
  [0x29D2, 0x29D1],
  [0x29D4, 0x29D5],
  [0x29D5, 0x29D4],
  [0x29D8, 0x29D9],
  [0x29D9, 0x29D8],
  [0x29DA, 0x29DB],
  [0x29DB, 0x29DA],
  [0x29F5, 0x2215],
  [0x29F8, 0x29F9],
  [0x29F9, 0x29F8],
  [0x29FC, 0x29FD],
  [0x29FD, 0x29FC],
  [0x2A2B, 0x2A2C],
  [0x2A2C, 0x2A2B],
  [0x2A2D, 0x2A2E],
  [0x2A2E, 0x2A2D],
  [0x2A34, 0x2A35],
  [0x2A35, 0x2A34],
  [0x2A3C, 0x2A3D],
  [0x2A3D, 0x2A3C],
  [0x2A64, 0x2A65],
  [0x2A65, 0x2A64],
  [0x2A79, 0x2A7A],
  [0x2A7A, 0x2A79],
  [0x2A7D, 0x2A7E],
  [0x2A7E, 0x2A7D],
  [0x2A7F, 0x2A80],
  [0x2A80, 0x2A7F],
  [0x2A81, 0x2A82],
  [0x2A82, 0x2A81],
  [0x2A83, 0x2A84],
  [0x2A84, 0x2A83],
  [0x2A8B, 0x2A8C],
  [0x2A8C, 0x2A8B],
  [0x2A91, 0x2A92],
  [0x2A92, 0x2A91],
  [0x2A93, 0x2A94],
  [0x2A94, 0x2A93],
  [0x2A95, 0x2A96],
  [0x2A96, 0x2A95],
  [0x2A97, 0x2A98],
  [0x2A98, 0x2A97],
  [0x2A99, 0x2A9A],
  [0x2A9A, 0x2A99],
  [0x2A9B, 0x2A9C],
  [0x2A9C, 0x2A9B],
  [0x2AA1, 0x2AA2],
  [0x2AA2, 0x2AA1],
  [0x2AA6, 0x2AA7],
  [0x2AA7, 0x2AA6],
  [0x2AA8, 0x2AA9],
  [0x2AA9, 0x2AA8],
  [0x2AAA, 0x2AAB],
  [0x2AAB, 0x2AAA],
  [0x2AAC, 0x2AAD],
  [0x2AAD, 0x2AAC],
  [0x2AAF, 0x2AB0],
  [0x2AB0, 0x2AAF],
  [0x2AB3, 0x2AB4],
  [0x2AB4, 0x2AB3],
  [0x2ABB, 0x2ABC],
  [0x2ABC, 0x2ABB],
  [0x2ABD, 0x2ABE],
  [0x2ABE, 0x2ABD],
  [0x2ABF, 0x2AC0],
  [0x2AC0, 0x2ABF],
  [0x2AC1, 0x2AC2],
  [0x2AC2, 0x2AC1],
  [0x2AC3, 0x2AC4],
  [0x2AC4, 0x2AC3],
  [0x2AC5, 0x2AC6],
  [0x2AC6, 0x2AC5],
  [0x2ACD, 0x2ACE],
  [0x2ACE, 0x2ACD],
  [0x2ACF, 0x2AD0],
  [0x2AD0, 0x2ACF],
  [0x2AD1, 0x2AD2],
  [0x2AD2, 0x2AD1],
  [0x2AD3, 0x2AD4],
  [0x2AD4, 0x2AD3],
  [0x2AD5, 0x2AD6],
  [0x2AD6, 0x2AD5],
  [0x2ADE, 0x22A6],
  [0x2AE3, 0x22A9],
  [0x2AE4, 0x22A8],
  [0x2AE5, 0x22AB],
  [0x2AEC, 0x2AED],
  [0x2AED, 0x2AEC],
  [0x2AF7, 0x2AF8],
  [0x2AF8, 0x2AF7],
  [0x2AF9, 0x2AFA],
  [0x2AFA, 0x2AF9],
  [0x2E02, 0x2E03],
  [0x2E03, 0x2E02],
  [0x2E04, 0x2E05],
  [0x2E05, 0x2E04],
  [0x2E09, 0x2E0A],
  [0x2E0A, 0x2E09],
  [0x2E0C, 0x2E0D],
  [0x2E0D, 0x2E0C],
  [0x2E1C, 0x2E1D],
  [0x2E1D, 0x2E1C],
  [0x2E20, 0x2E21],
  [0x2E21, 0x2E20],
  [0x2E22, 0x2E23],
  [0x2E23, 0x2E22],
  [0x2E24, 0x2E25],
  [0x2E25, 0x2E24],
  [0x2E26, 0x2E27],
  [0x2E27, 0x2E26],
  [0x2E28, 0x2E29],
  [0x2E29, 0x2E28],
  [0x3008, 0x3009],
  [0x3009, 0x3008],
  [0x300A, 0x300B],
  [0x300B, 0x300A],
  [0x300C, 0x300D],
  [0x300D, 0x300C],
  [0x300E, 0x300F],
  [0x300F, 0x300E],
  [0x3010, 0x3011],
  [0x3011, 0x3010],
  [0x3014, 0x3015],
  [0x3015, 0x3014],
  [0x3016, 0x3017],
  [0x3017, 0x3016],
  [0x3018, 0x3019],
  [0x3019, 0x3018],
  [0x301A, 0x301B],
  [0x301B, 0x301A],
  [0xFE59, 0xFE5A],
  [0xFE5A, 0xFE59],
  [0xFE5B, 0xFE5C],
  [0xFE5C, 0xFE5B],
  [0xFE5D, 0xFE5E],
  [0xFE5E, 0xFE5D],
  [0xFE64, 0xFE65],
  [0xFE65, 0xFE64],
  [0xFF08, 0xFF09],
  [0xFF09, 0xFF08],
  [0xFF1C, 0xFF1E],
  [0xFF1E, 0xFF1C],
  [0xFF3B, 0xFF3D],
  [0xFF3D, 0xFF3B],
  [0xFF5B, 0xFF5D],
  [0xFF5D, 0xFF5B],
  [0xFF5F, 0xFF60],
  [0xFF60, 0xFF5F],
  [0xFF62, 0xFF63],
  [0xFF63, 0xFF62]
];

function show(attributes, text) {
  var e = document.createElementNS("http://www.w3.org/2000/svg", "text");
  for (var name in attributes) {
    e.setAttribute(name, attributes[name]);
  }
  e.textContent = text;
  document.documentElement.appendChild(e);
}

function showCharacters(isReference) {
  var row = 0, col = 0;
  for (var i = 0; i < mirrors.length; i++) {
    show({ x: col * 50 + 30,
           y: row * 30 + 30,
           direction: isReference ? "ltr" : "rtl",
           "unicode-bidi": "embed",
           "text-anchor": "middle",
           "font-family": "BitPattern",
           "font-size": "40px" },
         String.fromCharCode(mirrors[i][isReference ? 0 : 1]));
    if (++col == 16) {
      col = 0;
      row++;
    }
  }
  document.documentElement.removeAttribute("class");
}

function test() {
  showCharacters(false);
}

function reference() {
  showCharacters(true);
}
